Dowel pins are simply straight solid pins that typically have chamfered ends to aid with insertion and alignment. From left to right: A steel dowel pin and a fluted wooden dowel. There are many types of pins used as fasteners.
At its simplest, a dowel pin is just a solid cylinder of material, which is inserted through a hole. When a dowel pin is inserted through concentric holes in two or more components, it locates and holds them together. A slight interference or transitional fit is typically used, which compresses the pin and generates significant friction to hold the pin securely in the holes.
Steel dowel pins are often used in precision engineering applications for accurate location and alignment. These dowels have chamfers at each end to enable insertion and to guide alignment.
The first reading should be taken on the part line groove Pic A. Pic B. Studies have shown that Multi-Grooved Dowel Pin perhaps produces a slightly stronger bond. Additionally, Multi-Grooved Dowel Pins, due to their design, slightly compress upon insertion, which some believe make them easier to work with. Spiral-Grooved Dowel Pins tend to have slightly stricter tolerances.
Chicago Dowel encourages customers to obtain samples of both types, and decide which they feel work better in their operation. Bore Dimensions : The dimensions of the boring should be into which the dowel pin will fit. This prevents the pin from shattering and causing injury. Caution: Safety goggles must always be worn when installing dowel pins. Taper Pins have one end slightly larger in diameter than the other, which results in a uniform taper for simple, effective fastening.
Spring Pins, also known as roll pins, are hollow, self-retaining fasteners that secure multiple components and parts together. They are used in light-duty applications in place of solid dowel pins.
Pilot Pins are self-clinching pins that easily embed in sheet metal and other soft materials. They are inserted into mounting holes for alignment applications. All Rights Reserved. Welcome to MSC, this site is screen reader friendly. Skip to the page header Skip to the main navigation Skip to the page content Skip to the page footer. Special Offers. Better MRO. Part Number Quantity.
Diagram of standard Dowel Pins. Dowel Pin Types: Precision dowel pins are effective in interference fit applications. Dowel Styles: Standard round not vented : Have a smooth finish. Used in through-hole applications.
Some offer a flat surface without an internal thread. Vented: Designed to relieve trapped air.
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